/Engine/Plugins/Runtime/DataRegistry/Source/DataRegistry/Public/DataRegistryTypes.h
A resolved unique id for a specific source, explains how to look it up. This type is opaque in blueprints and cannot be saved across runs
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)([BlueprintType](Programming/UnrealArchitecture/Reference/Structs/Specifiers/BlueprintType)) struct FDataRegistryLookup
TArray<TTuple<...
SourceLookups
TODO can be more efficient, probably best option is pack it into the num field of theFName, no one really names entries Foo_2147483646.